I think it is worth investing in more stable altcoins, but their growth will depend on what will happen with the cryptocurrency market and Bitcoin. Here is list coins in which in my view is worth to invest: Ethereum, EOS, Ripple, ADA, OMG, Waves and Stellar.
That's really good because now the price itself is also decreasing. and a big advantage if we start to be able to start investing now to increase it later